backend\controllers\OrderController::actionCancel PHP Method

    public function actionCancel($id)
    {
        try {
            $cancelOrderForm = new CancelOrderForm($id);
        } catch (InvalidParamException $e) {
            throw new BadRequestHttpException($e->getMessage());
        }
        if ($cancelOrderForm->load(Yii::$app->request->post()) && $cancelOrderForm->cancel()) {
            Yii::$app->session->setFlash('success', '取消成功！');
        } else {
            Yii::$app->session->setFlash('danger', '取消失败！');
        }
        return $this->redirect(['view', 'id' => $id]);
    }